Get my FREE cheat sheets for Public Health, Epidemiology, Research Methods and Statistics (including transcripts of these lessons) here: www.learnmore365.com/courses/public-health-epidemiology-research-methods-and-statistics-resource-library
@arifmemovic3383
2 жыл бұрын
You have saved hundreds if not thousands of hours of beginning analysts time. Thanks!
@gregmartin
2 жыл бұрын
You're welcome!
@danmungai555
4 жыл бұрын
Hello sir, this is amazing. You're a wonderful teacher. Please do more. Very many thanks from me here in Kenya
@gregmartin
4 жыл бұрын
Thank you very much for the feedback. I’ve been to Kenya. Lovely country.
@danmungai555
4 жыл бұрын
I have been having problems with functions, can you help? I would appreciate so much
@chertify
2 жыл бұрын
I'm watching halfway. I just hit subscribe. The content you put here in this video is just so well-explained! You translate codes into layman's term and have "tidily" edited your video! I love the zoom in and out effect of it and the sound effect. Not too much. Just right. Not annoying, rather impressive. Thank you for sharing your knowledge to us, Greg!
@chertify
2 жыл бұрын
I just finished watching and taking down notes. Huge applause to you, Greg!!!
@gregmartin
2 жыл бұрын
What awesome feedback, thank you! I really appreciate it!
@asiathogmartin7725
4 жыл бұрын
You said, "Boom Shakalaka" LOL! Most awesome video ever.
@tuanlong9238
4 жыл бұрын
11:48 - " Take care, stay well, don't do drugs, always do best, speak to you soon. Bye! " - that's a cool outro
@Junecode
3 ай бұрын
Greg, thanks for ALL your elaborate videos and the structure of the lessons. In addition, the way you explain the code methodically! Love it. I was so stressed about replacing NA with none for the variable, gender (Pt 3 of handling missing values), turns out the variable is sex. Phew
@rezzyraptor
2 жыл бұрын
I know this video is old, but still very helpful! I love your channel, you make stats and R fun :D Thanks for making these, keep up the great work.
@gregmartin
2 жыл бұрын
Glad you like them!
@sakanablesakanable
Жыл бұрын
Thank you so much Greg, can you please tell me what software you use for video editing? Thanks in advance
@fernleaf1
3 жыл бұрын
Great video. Looking forward to your videos about imputation and the MICE package. Keep’em coming!
@adrianfletcher8963
4 жыл бұрын
Please do a video on imputation in R! I was working on something and I was confused as to whether my data was "missing at random" or another option so I wasn't sure how to handle imputation.
@ostione
3 жыл бұрын
Best r tutorial , visuals, pace, delivery....so good!
@gregmartin
3 жыл бұрын
Wow, thanks!
@lilikoimahalo
3 ай бұрын
This is a very insightful explanation:) thank you!
@gregmartin
2 ай бұрын
Glad you find it insightful. Thank you
@nour_hisham
2 жыл бұрын
Thanks for the help, really appreciate, I have exam tomorrow, and you really helped Sir.😃❤
@gregmartin
2 жыл бұрын
Glad it was helpful! Thank you :)
@hazemshahin4166
2 жыл бұрын
great way of yours to finally simplify stats ...thank you
@gregmartin
2 жыл бұрын
Glad it was helpful!
@xprownz
3 жыл бұрын
Great video, helped me a lot cleaning some datasets in an easy way.
@ousmanelom6274
3 жыл бұрын
You are a good teacher i like your video
@markelov
10 ай бұрын
Could you please make a video on testing MCAR and, given its assumption of multivariate normality, talk specifically about what to do with factor variables or logicals?
@topabschalala9900
Жыл бұрын
Impressed!
@gregmartin
Жыл бұрын
Thank you. Cheers
@dineshlakshitha1259
3 жыл бұрын
supper video clear, thank you soo much
@eridianestrada8923
4 жыл бұрын
Hello, thank you for these videos. They are very helpful. Is there a video on what program evaluation is and how that looks in the global health context?
@ruhafza4719
4 жыл бұрын
Waoo...another great video
@mugambwajonah8352
7 ай бұрын
I like the audio quality
@gregmartin
6 ай бұрын
Thank you!
@haraldurkarlsson1147
3 жыл бұрын
Greg, I am having trouble seeing the difference between changing missing data to value vs imputation. Are they not the same? Can you explain the difference. Thanks! Great lessions by the way.
@jamesparker7700
4 жыл бұрын
Hi Greg love your videos! Im a medical student who is going to intercalate next year in public health which im very excited about. Ive got a choice however between MSc International public health (with a focused stream on humanitarian studies) or MSc Humanitarian studies. Im interested in the working humanitarian relief space, but im wondering if I should I keep my studies a bit broader at the moment and study the MPH. Would be interested to know what you think in terms of if one would be more advantageous in my career. thanks James
@heartheart5543
3 жыл бұрын
Dear Greg, I've been watching all you R video in your other channel " R Programming 101". Why didn't you put this R video in that channel?
@AndrzejFLena
3 жыл бұрын
Great introductory video! Thanks! :D I have a question for everyone: I'm imputing missing values for Gender in a dataframe. Out of the complete rows (no NAs) Male=61.89% and Female=the rest obviously. Is there a way I can impute the values randomly but in these proportions? It feels like there must be but I am new to R... Thanks!!
@bradvanbakel5781
2 жыл бұрын
im a bit late but i guess if you do a conditional on a random number generator. So 0-0.3811 is Female and 0.3812+ is male
@sydbyd5040
2 жыл бұрын
🖐 great video, thanks. But didn't work for my case. There is a char format column, in my table (14 columns * 50000 rows) with up to 7000 missing values, but na.omit() can't find them. Is it possible it's due to invisible typed "space" that na.omit() can't find them? I hope I was clear.
@michaelegbujua9369
Жыл бұрын
I want videos on text manipulation
@violaz1141
6 ай бұрын
Why do you use pipe at the end of each command?
@navicto
3 жыл бұрын
This video has useful information. However, it didn't help me understand missing data. It helped me understand how to filter out or replace missing values with a constant. Not the same.
@deadlyderp5856
Жыл бұрын
Hello Greg, I have a question. I ran the following code and i want to run a regression on the adjusted dataset now. However, it takes the unadjested dataset instead of the adjusted one. Also, it creates a new dataset called ''.'' (so just a dot). This dataset is the correct adjusted one, but I cannot even use it. I am confused. library(dplyr) library(ggplot2) library(tidyverse) iabbd_8010_v1%>% select(Destination, Year, Origin, Mstock_Total, Mstock_Low, Mstock_Med, Mstock_High, Distance, Democracy_origin, Democracy_destination, GDPpc_origin, GDPpc_destination, Language, Population_origin, Population_destination, Border)%>% mutate(Mstock_Total = replace(Mstock_Total, Mstock_Total == 0, NA))%>% drop_na(Mstock_Total)%>% mutate(Mstock_Total = log(Mstock_Total))%>% mutate(Population_origin = log(Population_origin))%>% mutate(Population_destination = log(Population_destination))%>% mutate(Distance = log(Distance))%>% mutate(GDPpc_destination = log(GDPpc_destination))%>% mutate(GDPpc_origin = log(GDPpc_origin))%>% View() reg1 = lm(Mstock_Total ~ Distance + Language + Border, data = iabbd_8010_v1) --> so actually i should do data = . but it says ''.'' doesn't exist summary(reg1)
@tsehayenegash8394
2 жыл бұрын
if you know please upload a video for the matlab code of Multivariate imputation by Chained Equation(MICE)
@rajiahdynsley2356
3 жыл бұрын
Great vid but instead of using the "%>%" function, how could we have done it? Since we are not able to save these changes made to the original dataset using "%>%" function.
@WORDHOUSEUS
3 жыл бұрын
create a new dataframe
@mayankvermashubhamkaran4373
2 жыл бұрын
Drop_na, complete.cases worked perfectly on R studio . But when I write the same code in kaggle new data frame doesn't have any value ?? Any suggestions ??
@CanDoSo_org
2 жыл бұрын
Na_if( ), it is just what I am looking for.
@gregmartin
2 жыл бұрын
Thank you for the feedback, Reddy. Hope all is well
@16kush
2 жыл бұрын
can we replace the NA without using library?
@yininggao9990
3 жыл бұрын
Why my latest R version shows that no tidyverse package 😫
@miscelleneoustubes
2 жыл бұрын
Sound system is very poor
@edisonwang1765
2 жыл бұрын
wa la
@CheeseCakes11944
Жыл бұрын
*what! "Don't do drugs"?? , youtube is one of the most addictive drugs in the world.
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